But when i try to change to multiselect as below, i having problem on Guid, Please advise. My skeleton code not completed as below:-

foreach (ToolStripMenuItem
item in tsddbSegment.DropDown.Items) {

if (item.Checked ==
true){productFamily = (Guid)item.Text;
//I stuck on this portion. How can i get Guid instead of value string. It maybe can call from Find segment method at helpers.cs file. But i dono how to call it & return into Guid.filterByProductFamily = (productFamily !=null && productFamily
!= Guid.Empty) ?
true :
false; }
}

Helpers.cs

// Return dataset of options

publicstaticList<SegmentItem>
GetChoices()

{

// Establish reference to dataset

frmMain mainForm = (frmMain)Application.OpenForms["frmMain"];

DataSet1 dataset = mainForm.GetDataSet();

// Clear down existing list

possibleChoices.Clear();

// Add option 'All'

possibleChoices.Add(newSegmentItem("(All)"));

// Get distinct set of account managers refrenced in opportunity dataset